package com.example.lotterysystem.common.utils;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;

import java.util.Collection;
import java.util.concurrent.TimeUnit;

@Slf4j
@Configuration
public class RedisUtil {
    /**
     * RedisTemplate: 将数据转换成字节数组, 在存储到redis中, 按字节读取
     * StringRedisTemplate: 直接存放String, 可读
     */
    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    public boolean set(String key, String value) {
        try {
            stringRedisTemplate.opsForValue().set(key, value);
            return true;
        }catch (Exception e){
            log.error("RedisUtil error, set({}, {})", key, value, e);
            return false;
        }
    }

    public String get(String key){
        try{
            return StringUtils.hasText(key) ? stringRedisTemplate.opsForValue().get(key) : null;
        }catch (Exception e){
            log.error("RedisUtil error, get({})", key, e);
            return null;
        }
    }

    /**
     * 设置过期时间
     * @param key
     * @param value
     * @param time
     * @return
     */
    public boolean set(String key, String value, Long time) {
        try {
            stringRedisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
            return true;
        }catch (Exception e){
            log.error("RedisUtil error, set({}, {})", key, value, e);
            return false;
        }
    }

    public boolean del(String... key){
        try{
            if(key != null && key.length > 0){
                if(key.length == 1){
                    stringRedisTemplate.delete(key[0]);
                }else{
                    stringRedisTemplate.delete(
                            (Collection<String>) CollectionUtils.arrayToList(key)
                    );
                }
            }
            return true;
        }catch (Exception e){
            log.error("RedisUtil error, delete({})", key, e);
            return false;
        }
    }

    public boolean hasKey(String key){
        try{
            return StringUtils.hasText(key) ? stringRedisTemplate.hasKey(key) : false;
        }catch (Exception e){
            log.error("RedisUtil error, hasKey({})", key, e);
            return false;
        }
    }
}
